mmdevapi: Implement a stub of MMDevice.

dlls/mmdevapi/Makefile.in

@@ -3,7 +3,7 @@ TOPOBJDIR = ../..
 SRCDIR    = @srcdir@
 VPATH     = @srcdir@
 MODULE    = mmdevapi.dll
-IMPORTS   = ole32 user32 advapi32 kernel32 ntdll
+IMPORTS   = ole32 oleaut32 user32 advapi32 kernel32 ntdll
 
 C_SRCS = \
 	devenum.c \

dlls/mmdevapi/main.c

@@ -24,11 +24,18 @@
 #define COBJMACROS
 #include "windef.h"
 #include "winbase.h"
+#include "wingdi.h"
 #include "wine/debug.h"
 
 #include "initguid.h"
 #include "ole2.h"
 #include "mmdeviceapi.h"
+#include "dshow.h"
+#include "dsound.h"
+#include "audioclient.h"
+#include "endpointvolume.h"
+#include "audiopolicy.h"
+#include "devpkey.h"
 
 #include "mmdevapi.h"
 

dlls/mmdevapi/mmdevapi.h

@@ -18,3 +18,15 @@
 
 extern HRESULT MMDevEnum_Create(REFIID riid, void **ppv);
 extern void MMDevEnum_Free(void);
+
+typedef struct MMDevice {
+    const IMMDeviceVtbl *lpVtbl;
+    LONG ref;
+
+    CRITICAL_SECTION crst;
+
+    EDataFlow flow;
+    DWORD state;
+    GUID devguid;
+    WCHAR *alname;
+} MMDevice;